C#

Finnhub API - Get Stock Quote

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Demonstrates how to get a stock quote from the Finnhub API. C#

bool success = false;

//  Replace with your actual Finnhub API key.
string apiKey = "YOUR_FINNHUB_API_KEY";
string symbol = "AAPL";

Chilkat.Http http = new Chilkat.Http();

//  This is the URL without params.
string urlWithoutParams = "https://finnhub.io/api/v1/quote";

Chilkat.HttpRequest req = new Chilkat.HttpRequest();

//  Add params that will be sent in the URL.
req.AddParam("symbol",symbol);
req.AddParam("token",apiKey);

req.HttpVerb = "GET";

//  Send the request to get the JSON response.
Chilkat.HttpResponse resp = new Chilkat.HttpResponse();
success = http.HttpReq(urlWithoutParams,req,resp);
if (success == false) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

Chilkat.JsonObject json = new Chilkat.JsonObject();
resp.GetBodyJson(json);

int statusCode = resp.StatusCode;
Debug.WriteLine("response status code: " + Convert.ToString(statusCode));

json.EmitCompact = false;
Debug.WriteLine(json.Emit());

//  Sample result:

//  {
//    "c": 248.8,
//    "d": -4.09,
//    "dp": -1.6173,
//    "h": 255.493,
//    "l": 248.07,
//    "o": 253.9,
//    "pc": 252.89,
//    "t": 1774641600
//  }

if (statusCode == 200) {
    //  Add the symbol to the top of the result.
    json.AddStringAt(0,"symbol",symbol);

    //  Rename members for clarification.
    json.Rename("c","currentPrice");
    json.Rename("d","change");
    json.Rename("dp","percentChange");
    json.Rename("h","high");
    json.Rename("l","low");
    json.Rename("o","open");
    json.Rename("pc","prevClose");
    json.Rename("t","unixTime");

    Debug.WriteLine(json.Emit());

}
else {
    Debug.WriteLine("Failed");
}